The dealer screwed up imho! A simple "two cards to get the pot" and the whole situation could've been avoided. I have seen it happen countless times in the US and Europe.
However something similar happend to me once:
I shipped pre, it was a multiway flop with two 8s villain pushes everybody out. I spike a pair on the turn, river is whatever. I tell the villain you have the 8 you're good. He shows me (only me) the 8. I nod (as in you're good), he mucks. !!!!
I table my hand. The dealer is about to push the pot towards me. I tell the dealer that villain had the winner (even though I knew the pot will be awarded to me anyway) The villain is obviously not happy and complains, floor rules his cards dead since they were mucked.
I know I could've given him the pot, but **** Karma: money is money and if you don't know the rules well enough of the game you are wagering on, too bad.
Two hands later I doubled up through him...